JP2012171669A - Sealing device in bag-making filling machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sealing device in a bag-making filling machine, with a simple configuration, in which a pair of sealing bodies facing each other across a conveyance path of a cylindrical film are movable linearly in a conveyance direction of the cylindrical film in the state of holding the cylindrical film.SOLUTION: By the rotation of an operating body 14, upper and lower sealing bodies 8 and 9 are linked with a pressing body 26 and moved in the facing direction of both sealing bodies 8 and 9 and the conveyance direction of the cylindrical film. In the movement in the facing direction, even when both sealing bodies 8 and 9 are abutted, since the pressing body 26 is moved by the rotation of the operating body 14, a coil spring 34 energizes the lower sealing body 9, both sealing bodies 8 and 9 are moved linearly in the conveyance direction of the cylindrical film in the state of maintaining an engagement position in the facing direction to impart a prescribed sealing pressure to the cylindrical film.

Description

  The present invention relates to a sealing device for a bag making and filling machine in which a cylindrical bag is given a predetermined seal to obtain a packaging bag.

  As a sealing device that obtains a packaged product by supplying articles into a cylindrical film while forming a strip-shaped film into a cylindrical shape and obtaining a packaged product, a pair of sealing bodies arranged facing each other up and down approach each other It is known that the box motion motion is performed so that the cylindrical film is sealed while moving from the upstream side to the downstream side in the conveyance direction of the cylindrical film with the cylindrical film sandwiched therebetween. Yes.

  For example, in the sealing device disclosed in Patent Document 1, one seal body biased by a spring is pressed against the biasing force of the spring by being pressed by the other seal body in a contact state of the pair of seal bodies. In order to evacuate, it moves so as to draw an arc locus that is somewhat collapsed in the radial direction. Along with the retraction, there is a problem that the sealing operation becomes unstable due to a tensile force in a direction crossing the direction in which the tubular film is conveyed by both seal bodies.

  Therefore, in the sealing device disclosed in Patent Document 2, a spring that contracts in a contact state between a pair of seal bodies is provided in each seal body, and both drive transmission mechanisms such as drive gears and eccentric gears are used to The contact surface of the sealing body is improved so as to move linearly from the upstream side to the downstream side in the conveyance direction of the tubular film. However, if the spring constant changes due to deterioration over time and the balance between the biasing force of the spring on one seal body and the biasing force of the spring on the other seal body is lost, the height position in the contact state of both seal bodies Changes, and the movement trajectories of both the sealing bodies are different from the set state. Therefore, it is necessary to strictly manage the urging force of the springs.

Japanese Patent No. 2969258 Japanese Patent No. 4190714

  The present invention relates to a bag making and filling machine having a simple configuration in which a pair of sealing bodies facing each other across a conveyance path of a tubular film can move linearly in the conveyance direction of the tubular film while sandwiching the tubular film. An object of the present invention is to provide a sealing device.

Among the embodiments (the first embodiment shown in FIGS. 1 to 4 and the second embodiment shown in FIG. 5), the present invention will be described with reference to the reference numerals of the drawings of the first embodiment.
In the sealing device of the bag making and filling machine according to the invention of claim 1, the pair of seal bodies (8, 9) facing each other across the conveyance path of the tubular film (4) sandwich the tubular film (4). It moves along with the conveyance of the tubular film (4) and performs horizontal sealing, and includes the following operating means (14), movable means (26, 29), one support means (31-33), and the other support. Means (22-24), force transmission means (35), and biasing means (34) are provided. The actuating means (14) rotates in conjunction with the drive source (16). The movable means (26, 29) is rotatably supported by the actuating means (14) at the eccentric position of the actuating means (14), and the seal members (8, 9) face each other as the actuating means (14) rotates. Move in the direction and the conveying direction of the tubular film (4). One support means (31-33) supports one seal body (9), and is linked to the movable means (26, 29) to oppose the seal bodies (8, 9) and the tubular film ( 4) Move in the transport direction. The other support means (22-24) supports the other seal body (8) and is linked to the movable means (26, 29) so as to oppose the both seal bodies (8, 9) and the tubular film ( 4) Move in the transport direction. The force transmitting means (35) is connected to the both supporting means (31 to 33, 22 to 24), and the other supporting means (22 to 24) in the opposite direction opposite to the one supporting means (31 to 33). Move. The urging means (34) is disposed between the movable means (26, 29) and one of the support means (31-33), and both seal bodies (26, 29) are moved along with the movement of the movable means (26, 29). A predetermined sealing pressure is applied at the time of meshing of 8 and 9).

  According to the first aspect of the present invention, when the actuating means (14) rotates, the pair of seal bodies (8, 9) are linked to the movable means (26, 29) to oppose the seal bodies (8, 9) and the cylinder. It moves in the conveyance direction of the film-like film (4). In this movement in the opposite direction, even if both seal bodies (8, 9) abut, the movable means (26, 29) are moved by the rotation of the actuating means (14), so that the urging means (34) is one side. The seal body (9) is energized. Accordingly, the pair of seal bodies (8, 9) move linearly in the conveying direction of the tubular film (4) while maintaining the meshing position in the facing direction, and apply a predetermined sealing pressure to the tubular film (4). Can be granted.

  In the invention of claim 2 premised on the invention of claim 1, the urging means (34) is pushed by the movable means (26, 29) when the both seal bodies (8, 9) are engaged with each other, and has a predetermined seal. A spring (34) that generates an elastic force corresponding to the application of pressure is provided. According to the second aspect of the present invention, it is possible to employ a biasing means having a simple configuration using the spring (34).

  The invention according to claim 3 premised on the invention of claim 1 or claim 2, wherein the one support means (31 to 33) is an extending portion extending in the opposing direction of both seal bodies (8, 9). A plurality of (32) are provided, and the movable means (26, 29) are movably supported by a plurality of extending portions (32). In the invention of claim 3, the movable means (26, 29) can be moved with good stability by the plurality of extending portions (32).

  The invention according to claim 4 based on the invention of claim 3, wherein the force transmission means (35) includes a guide body (20) supported so as to be movable in the conveying direction of the tubular film (4), and the guide. A rotating body (36) supported rotatably by the body (20) and a position of the rotating body (36) spaced from the center of rotation of the rotating body (36) on one support means (31-33). One link (37) rotatably supported and the other link (22-24) rotatably supported by the other support means (22 to 24) at a separated position different from the position of the rotating body (36). 38). In the invention of claim 4, a force transmission means (35) having a simple configuration utilizing the rotating body (36), one link (37) and the other link (38) can be employed.

  The invention according to claim 5, which presupposes any one of the inventions according to claims 1 to 4, is characterized in that the biasing means (34) is disposed below one seal body (9), and the biasing means is provided. The horizontal bag making and filling machine applies a predetermined sealing pressure by urging the one sealing body (9) upward by means (34). In the invention of claim 5, since the biasing means (34) is disposed below the one seal body (9) so as to bias one seal body (9) upward, the biasing means ( This is advantageous when performing maintenance such as cleaning and adjustment of 34).

  The present invention simplifies a sealing device in a bag making and filling machine in which a pair of seal bodies facing each other across a conveyance path of a tubular film sandwich the tubular film and can move linearly with the conveyance of the tubular film. Can be configured.

The schematic diagram which looked at the horizontal bag-making filling machine concerning a 1st embodiment from the front. The schematic diagram which looked at the sealing device in a 1st embodiment from the side. The schematic diagram which looked at the sealing device in a 1st embodiment from the front. The figure which shows the change of the position of the seal body and coil spring in 1st Embodiment. The schematic diagram which looked at the sealing device in 2nd Embodiment from the side surface (conveyance direction).

First, a first embodiment of the present invention will be described with reference to FIGS.
In the horizontal bag making and filling machine shown in FIG. 1, the belt-like film 2 drawn from the raw fabric roll 1 is formed into a cylindrical shape by the bag making means 3, and the vertical seal is provided on the cylindrical film 4 by the vertical sealing means 5. In addition, the articles 7 are supplied from the supply conveyor 6 into the cylindrical film 4 at predetermined intervals, and are conveyed between the upper and lower seal bodies 8 and 9 facing each other across the conveyance path of the cylindrical film 4. The lower seal body 9 (one seal body) and the upper seal body 8 (the other seal body) are linearly connected to the downstream side in the transport direction of the tubular film 4 together with the tubular film 4 with the tubular film 4 being sandwiched. The horizontal motion is applied while moving to the position, and the box motion motion is separated from the tubular film 4. Therefore, the tubular film 4 is sandwiched between the pair of seal bodies 8 and 9 at the front and rear positions of the article 7 in the tubular film 4 and laterally sealed in the left-right direction intersecting the transport direction of the tubular film 4. The film 4 is cut to obtain a pillow package.

  As shown in FIGS. 2 and 3, a part of the support frame 10 is constituted by side frames 11 disposed on the left and right sides of the conveyance path of the tubular film 4. An operation body 14 (operation means) having a disk-like gear portion is rotatably supported on the support panel 12 in each side frame 11 and a drive shaft 15 is supported. Interlocking gears 15 a are attached to two locations of the drive shaft 15, and the interlocking gears 15 a are meshed with gear teeth 14 a disposed on the outer periphery of each operating body 14. Further, a servo motor 16 (drive source) is disposed outside the one support panel 12. The driving force of the servomotor 16 is transmitted to the drive shaft 15 by the pulley transmission means 17 and is input to the gear teeth 14a of each operating body 14 via each interlocking gear 15a. Therefore, each operating body 14 rotates in a predetermined direction in conjunction with the servo motor 16.

  On both sides of the lower end of each support panel 12 in the front-rear direction (carrying direction of the tubular film 4), stays 18 protrude inward of the support panel 12, and between each stay 18, a guide rod 19 extends to the support panel 12. It is constructed so as to extend in the front-rear direction in parallel. Each guide rod 19 supports a guide body 20 connected to each other by a support shaft 21 so as to be movable in the front-rear direction. A slide rod 22 (the other support means) is fitted in each guide body 20 so as to be movable in the vertical direction. Between the upper end and the lower end of each slide rod 22, connecting bodies 23 and 24 (the other support means) are installed. The upper seal body 8 is attached to the upper connecting body 23.

  Above each guide body 20, a pair of slide rods 22 is provided with a pressing body 26 (movable means) so that it can approach and separate from the guide body 20. The pressing body 26 is fitted so that each slide rod 22 can be moved in the vertical direction, and the lower left and right sides of the pressing body 26 are provided with an eccentric pin 14 b protruding from the operating body 14 at the eccentric position of the operating body 14, and Are connected to each other. A hollow cylindrical body 29 (movable means) is inserted in the vicinity of the center of the pressing body 26, and a shaft portion 32 (extending portion) moves vertically with respect to the cylindrical body 29 in each cylindrical body 29. It is inserted as possible. The upper end of each shaft portion 32 protrudes from the cylindrical body 29, is attached to a base portion 31 (one support means) that supports the lower seal body 9, and the lower end of each shaft portion 32 (one support means). Is attached to a rod-like connecting body 33 (one support means). A coil spring 34 (biasing means) is wound around the outer periphery of the shaft portion 32 between the pedestal 31 and the pressing body 26 and disposed on the cylindrical body 29, and the coil spring 34 extends from the cylindrical body 29 to the outer periphery. The flange 29a formed to extend to the pressing body 26 is always urged. Bearings 33b are attached to the left and right ends of the coupling body 33, and are fitted in a groove 26a formed in the pressing body 26 so as to be movable up and down.

  A toggle link mechanism 35 (force transmission means) is coupled to the coupling body 33. The toggle link mechanism 35 includes a guide body 20, a support shaft 21 disposed on the guide body 20, a rotating body 36 rotatably supported on the support shaft 21, an upper link 37 (one link), And a lower link 38 (the other link). The upper link 37 is supported so as to be rotatable with respect to one end 36 a of the rotating body 36 and the connecting body 33. The lower link 38 is supported so as to be rotatable with respect to the other end 36 b of the rotating body 36 and the connecting body 24. The upper link 37 and the lower link 38 have link lengths, attachment angles, and the like set so as to move point-symmetrically about the support shaft 21 as a rotation center.

  The height position of the eccentric pin 14b changes and the height position of the pressing body 26 changes up and down while each operating body 14 makes one rotation in a predetermined direction in conjunction with the servo motor 16. Until the pressing body 26 rises to a predetermined height position, the coil spring 34 presses the base portion 31 in a state in which the length is kept constant. Therefore, together with the pressing body 26, the base portion 31 and The shaft portion 32 connected to the base portion 31, the connecting body 33, and the lower seal body 9 are also raised. As the connecting member 33 is raised, the lower connecting member 24, the slide rod 22, the upper connecting member 23, and the upper seal member 8 as the other supporting means move downward through the toggle link mechanism 35. The upper and lower seal bodies 8, 9 approach each other. Then, when the pressing body 26 is raised to the predetermined height position, both the sealing bodies 8 and 9 are brought into contact with each other (FIG. 4A).

  Even after the upper and lower seal bodies 8 and 9 come into contact with each other, the pressing body 26 moves upward by the rotation of the operating body 14 until the eccentric pin 14b of the operating body 14 is positioned at the uppermost position. In the upward movement of the pressing body 26 after the contact between both the sealing bodies 8 and 9, since both the sealing bodies 8 and 9 are in contact, the pressing body 26 contracts the coil spring 34 with the cylindrical body 29. However, the state which approached the base part 31 which supports the lower seal body 9 and the lower end of the cylinder 29 was separated from the connection body 33 continues. During this time, the power from the pressing body 26 to the coupling body 33 is absorbed by the coil spring 34, and the coupling body 33 stops together with the lower seal body 9, and the rotation angles of the upper link 37 and the lower link 38 are maintained. The meshing positions of the upper and lower seal bodies 8 and 9 are maintained, and a seal pressure is obtained between the seal bodies 8 and 9 by contraction of the coil spring 34. In the present embodiment, as shown in FIG. 4B, the coil spring 34 is contracted by the length L at the maximum by the movement of the pressing body 26, and the lower end portion of the cylindrical body 29 extends from the recess 33 a of the coupling body 33 to the maximum length L. It is set to get the seal pressure away only. It should be noted that the maximum length that the coil spring 34 contracts due to the movement of the pressing body 26 when the seal bodies 8 and 9 sandwich the cylindrical film 4 and the both sealing bodies that apply the sealing pressure to the cylindrical film 4 are engaged. The length is shorter than the substantial length L depending on the thickness of the film.

  Thereafter, when the rotation of the operating body 14 continues, the pressing body 26 moves downward. In the downward movement of the pressing body 26, as shown in FIG. 4C, the connecting body 33 has no pressing body 26 until the pressing body 26 moves by a length L in the direction away from the lower seal body 9. Power is not directly transmitted from the upper link 37 and the rotation angle of the lower link 38 is maintained at the same angle as that in FIGS. During this time, the pressing of the coil spring 34 is gradually released. When the pressing body 26 is separated from the lower seal body 9 by a length L and the lower end portion of the cylindrical body 29 comes into contact with the concave portion 33a of the coupling body 33 (see FIG. 4 (d)), both the seal bodies 8 and 9 The upper and lower seal bodies 8, 9 are maintained while maintaining the same positional relationship among the connecting body 33, the pressing body 26, the coil spring 34, and the lower seal body 9 until the contact state (the state shown in FIG. 4A) is reached in the cycle. Gradually approach each other and then gradually approach each other.

  Since the guide body 20 that supports the slide rod 22 so as to be movable up and down is supported by the support panel 12 so as to be movable in the front-rear direction, the upper and lower seal bodies 8 and 9 are maintained facing each other as shown in FIG. The upper seal body 8 moves along the locus of the imaginary line V, and the lower seal body 9 moves along the locus of the imaginary line W. Further, the upper and lower seal bodies 8 and 9 are in contact with each other in FIG. 4A until just before the contact state in FIG. While the meshing positions of both the seal bodies 8 and 9 are always kept at the same height position h, the seal bodies 8 and 9 move linearly within a specific range. That is, in FIG. 1, both the sealing bodies 8 and 9 move linearly toward the downstream in the transport direction of the tubular film 4 so as to coincide with the virtual line X. Then, the coil spring 34 contracts while the upper and lower seal bodies 8 and 9 move linearly, whereby a predetermined seal pressure is applied to the tubular film 4 by the both seal bodies 8 and 9 and a lateral seal is applied. Is done.

  Next, a second embodiment of the present invention will be described with reference to FIG. 5 with a focus on differences from the first embodiment. In addition, what is the same as the structure of 1st Embodiment is demonstrated using the same code | symbol as 1st Embodiment.

  In the second embodiment, the support body 52 (the other support means) is integrally connected to the base 31 (the other support means) and the coupling body 33 (the other support means), and the seal body 9 (the other seal body). Is arranged so as to be movable in the vertical direction with respect to the slide rod 22, and is supported by the eccentric pin 14b of the operating body 14 (operating means) having a height position different from that of the first embodiment. The body 50 (extension part in the movable means) is installed on the slide rod 22 (one support means) so that it can move up and down as the operating body 14 rotates, and the pressing body 50 is attached to each slide rod 22. The point which arrange | positioned the coil spring 51 (biasing means) to each slide rod 22 so that it always urges | biases to the stopper 53 side made differs from 1st Embodiment.

  The connecting body 24 (one supporting means) is pressed in a state where the coil spring 51 keeps the length constant until the pressing body 50 is lowered to a predetermined height position by the rotation of the operating body 14. The slide rod 22, the stopper 53 and the upper seal body 8 are lowered together with 24. As the connecting body 24 is lowered, the lower seal body 9 moves upward via the toggle link mechanism 35, so that the upper and lower seal bodies 8, 9 approach each other and come into contact with each other. Even after the upper and lower seal bodies 8 and 9 come into contact with each other, the pressing body 50 moves downward by the rotation of the operating body 14 until the eccentric pin 14b of the operating body 14 is positioned at the lowest position. In the downward movement of the pressing body 50 after the sealing bodies 8 and 9 are in contact with each other, since the sealing bodies 8 and 9 are in contact with each other, the pressing body 50 is separated from the stopper 53 and the coil spring 51. The state in which the pressing body 50 is moved away from the stopper 53 is continued while approaching the connecting body 24 while shrinking. During this time, the power from the pressing body 50 to the connecting body 24 is absorbed by the coil spring 51, and the rotational angles of the upper link 37 and the lower link 38 are maintained. The seal pressure is obtained between the seal bodies 8 and 9 by contraction of the coil spring 51.

  Accordingly, as in the first embodiment, the upper seal body 8 moves along the locus of the imaginary line V in FIG. 1 and the lower seal body 9 moves along the locus of the imaginary line W. Further, the mesh positions of both the seal bodies 8 and 9 are always kept at the same height from the time when the upper and lower seal bodies 8 and 9 are brought into the contact state until immediately before the contact state is finished through the mesh state. In a state, it moves linearly by a specific range. In FIG. 1, both seal bodies 8 and 9 move linearly toward the downstream in the transport direction of the tubular film 4 so as to coincide with the virtual line X. Then, while the upper and lower seal bodies 8 and 9 move linearly, the coil spring 51 contracts, whereby a predetermined seal pressure is applied to the tubular film 4 by both the seal bodies 8 and 9, and the horizontal seal is Applied.

This embodiment has the following effects.
(1) In the sealing device of the horizontal bag making and filling machine according to the first embodiment and the second embodiment, after the upper and lower sealing bodies 8 and 9 are in contact with each other, the pressing is performed as the operating body 14 rotates. When the bodies 26 and 50 are further moved in the opposing direction of the upper and lower seal bodies 8 and 9 and the coil springs 34 and 51 are contracted (meshing state), both the seal bodies 8 and 9 are in the conveying direction of the tubular film 4. By moving linearly by a specific range toward the downstream, a predetermined sealing pressure can be applied without the tubular film being pulled in the vertical direction by the seal bodies 8 and 9. Therefore, the sealing operation can be stabilized with a simple configuration, and a good sealing state can be obtained. Moreover, the position where both the seal bodies 8 and 9 abut can be maintained at an appropriate position without being affected by a change in the spring constant due to deterioration of the coil springs 34 and 51 or the like.

  (2) In the sealing device of the horizontal bag making and filling machine according to the first embodiment and the second embodiment, a predetermined sealing pressure is applied when the sealing bodies 8 and 9 are engaged with each other as the pressing bodies 26 and 50 move. Since the coil springs 34 and 51 are used as the biasing means, the configuration of the biasing means can be simplified.

  (3) In the sealing device of the horizontal bag making and filling machine according to the first embodiment and the second embodiment, the connecting bodies 24 and 33 as the support means, the slide rod 22 and the toggle link mechanism 35 are connected. Since the guide body 20 in the link mechanism 35 is supported so as to be movable in the conveying direction of the tubular film 4, it is moved up and down by a driving force of a single servo motor 16 using a simple toggle link mechanism 35 that does not use a gear or the like. The seal bodies 8 and 9 can be moved in the conveying direction of the tubular film 4, and the seal bodies 8 and 9 can be moved in opposite directions in the opposing direction.

  (4) In the sealing device of the horizontal bag making and filling machine according to the first embodiment and the second embodiment, a plurality of portions that are a part of one support means and extend in the opposing direction of both seal bodies 8 and 9. The pressing bodies 26 and 50 are movably guided and supported by the extending portions (the shaft portion 32 in the first embodiment and the slide rod 22 in the second embodiment) so that the pressing bodies 26 and 50 are movable. It can be guided smoothly and stably in the facing direction.

  (5) In the sealing device of the horizontal bag making and filling machine according to the first embodiment, since the coil spring 34 is incorporated below the lower seal body 9, it is advantageous when performing maintenance such as cleaning and adjustment of the coil spring 34 and the like. is there.

The present invention can be modified as appropriate in addition to the above-described embodiment without departing from the spirit of the present invention. For example, the following configuration can be employed.
As for the urging means, if the upper and lower seal bodies 8 and 9 are changed from the contact state to the meshing state and a predetermined seal pressure can be applied, the leaf springs are replaced with the coil springs 34 and 51. Alternatively, an elastic body such as rubber or an electromagnet may be employed. Moreover, in this embodiment, in order to move the press bodies 26 and 50 smoothly, the plurality of coil springs 34 and 51 are equally disposed on the left and right, but a single spring may be used.

As for the force transmission mechanism, a gear mechanism may be employed instead of the toggle link mechanism 35 to move the upper and lower seal bodies 8 and 9 by the same distance in opposite directions.
The operating body 14 may be rotated in conjunction with the servo motor 16 by directly connecting the rotating shaft of the servo motor 16 to the operating body 14 so that the servo motor 16 and the operating body 14 are concentric. Further, the operating body 14 may have a form other than the disk shape.

  The sealing device according to the present invention is employed in the horizontal bag making and filling machine, but can also be used in a vertical bag making and filling machine.

  DESCRIPTION OF SYMBOLS 4 ... Cylindrical film, 8 ... Upper seal body, 9 ... Lower seal body, 14 ... Actuator (actuation means), 16 ... Servo motor (drive source), 20 ... Guide body, 22 ... Slide rod (support means), Reference numerals 23, 24 ... connecting body (supporting means), 26 ... pressing body (moving means), 29 ... cylindrical body (moving means), 31 ... base (supporting means), 32 ... shaft (supporting means), 33 ... connection Body (supporting means), 34 ... Coil spring (biasing means), 35 ... Toggle link mechanism (force transmitting means), 36 ... Rotating body, 37 ... Upper link, 38 ... Lower link, 50 ... Pressing body (movable means) 51 ... Coil spring (biasing means), 52 ... Support (the other support means).

Claims (5)

In the sealing device in the bag making and filling machine, the pair of seal bodies facing each other across the conveyance path of the tubular film sandwiches the tubular film and moves along with the conveyance of the tubular film to perform a lateral seal.
An actuation means that rotates in conjunction with a drive source;
Movable means that is pivotally supported by the actuation means at the eccentric position of the actuation means and moves in the opposing direction of both seal bodies and the transport direction of the tubular film as the actuation means rotates;
One supporting means that supports one sealing body and moves in the facing direction of both sealing bodies and the conveying direction of the tubular film in association with the movable means;
Supporting the other seal body, and linked to the movable means, the other support means moving in the opposing direction of both seal bodies and the transport direction of the tubular film;
A force transmitting means connected to the two supporting means and moving the other supporting means in a facing direction opposite to the one supporting means;
A bag-making machine comprising: an urging unit that is disposed between the movable unit and the one support unit and applies a predetermined seal pressure when the seal members are engaged with each other as the movable unit moves. Sealing device in filling machine.   2. The bag making according to claim 1, wherein the biasing means includes a spring that is pressed by the movable means when the two seal bodies are engaged with each other and generates an elastic force corresponding to application of a predetermined seal pressure. Sealing device in filling machine.   The one supporting means has a plurality of extending portions extending in the opposing direction of both seal bodies, and the movable means is movably supported by the plurality of extending portions. The sealing apparatus in the bag making and filling machine according to claim 1.   The force transmission means includes a guide body supported so as to be movable in the conveying direction of the tubular film, a rotating body supported rotatably by the guide body, and a rotating body separated from the rotation center of the rotating body. One link that is rotatably supported by one support means at the position and a second link that is rotatably supported by the other support means at a position different from the position of the rotating body. The sealing device in the bag making and filling machine according to claim 3.   A horizontal bag making and filling machine in which the biasing means is disposed below one seal body, and the biasing means biases the one seal body upward to apply a predetermined seal pressure. The sealing apparatus in the bag making and filling machine according to any one of claims 1 to 4.

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